Memory Usage Debugging

There’s been a lot of talk about reducing memory usage in GNOME, so
some people may be interested in the little
adventure I had this morning tracking down a mysterious 10M that
appeared in gnome-panel’s memory map in FC4.

Update: I better clarify that to avoid misunderstandings … this is
10M of unused virtual memory, not physical memory. The kernel would
only have ever allocated a handful of physical pages in this space.
This does not mean that GNOME now uses 10M less of your RAM.